Kiln for burning clay products.



vdmeaoao Y PATENTED SEPT. 4, 1906. J. T. H. WARWOOD. KILN FORBURNINGULAY PRODUCTS.

APPLICATION FILED AW. 2, 1906.

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- N0! 830,386. EATENTED SEPT. 4, 1906.

J. T. H. WARWOOD.

KILN FOR BURNING CLAY PRODUCTS.

APPLICATION rum) 111.2, 1906.

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KILN FOR BURNING CLAY PRODUGTS.

APILIOATION FILED APR. 2, 1908.

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No. 830,386. PATENTED SEPT. 4, 1906.

, J. T. H.- WARWOOD. KILN FOR BURNING CLAY PRODUCTS. APPLIUATIORILEDAPR. 2, 1906.

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PATENTED SEPT 4 J. T. H. WARWOOD. v KILN FOR BURNING CLAY PRODUCTS.

APPLICATION FILED APR.2, 1906.

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' n4: mvzms PETERS UNITED STATES PATENT OFFICE.

JOSEPH T. H. WARWOOD, OF AUGUSTA, GEORGIA, ASSIGNOR OF ONE- HALF TO JOBL. HANKINSON, OF AUGUSTA; GEORGIA.

KILN FOR BURNING CLAY PRODUCTS.

Specification of Letters Patent.

Patented Sept. 4, 1906.

- Application filed April 2, 1906. Serial No. 309.434-

.To aZZ whom it may concern.-

ject of my invention is to make a kiln of any desired size or shapewhich may be used either separately in or connection with other kilns tomake use of the waste gases drawn therefrom.

.With this object in view my invention con sists in the constructionsand combinations of parts, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical central section oftwo kilns connected together in accordance with my invention. Fig. 2 isa cross-section on the broken line 2 2 of Fig. 1. Fig. 3 is acrosssection on the line 3 3 of Fig. 2. Fig. 4 is a cross-section of adifferent style of kiln, but constructed accord ing to my invention; andFig. 5 is a cross-see tion on the line 5 5 of Fig. 4.

a represents the chimney or stack, which may be located in the center ofa group of kilns or in any convenient place.

In Fig. 1 two circular kilns are shown, these being merely two of aseries, of which any number may be used. 6 represents the top of thekilns, and c the sides, all of the kilns shown being downdraft-kilns. (irepresents the fire-boxes provided with grates e, of which any numbermay be used arranged around the circumference of the kiln. f representsthe flues delivering to the upper part of each of the fire-boxes. Theinterior of the kiln above the floor g is practically unencumbered forthe reception of articles to be heated, and It represents the removabledoors through which the articles to be heated are introduced into thekiln before the same is fired up. The back part of the fireplaces isprovided with a Wall i, which causes the products of combustion to bethrown up toward the top of the kiln over the material to be treated,from whence the products of comshown instead of circular kilns.

bustion pass downward through the material to be treated and out throughthe holes j in the floor of the kiln. These holes are preferably locatedin concentric circles. The outer rows of circles communicate with theradial passages 7r, which in turn communicate with a circular passage Z,with which the inner row of holes also communicates. The circularpassage Z communicates with a cross-passage m, which in turncommunicates with the large delivery-passage n, leading out of the kilnand connecting with the passage 0, leading to the stack a, which passagemay be shut off by a valve p. The passage n also communicates with apassage q underneath the next kiln, and a valve 1 is used to close thispassage when desired. By means of the valves ;0 and r the waste gasesafter passing through the kilns maybe either led directly into the stackor caused to pass into a second kiln through the passage 9. The passageq communicates directlywith receiving-chamber, (not lettered,).

thence to the passages s, which pass through the floor of the secondkiln and which deliver into the flues t in said kiln, causing the gasesto be thrown up to any desired height of said kiln, whence they descendthrough the material set in the succeeding kilns. These fiues t areremovable and may be used in connection with receiving-chamber, circularor straight flues, and this is one of the important features of myinvention, since by the use of the removable flues the gases may bedistributed from the burning-kiln through the succeeding kilns from anydesired point; but in all cases the draft through the kiln is downward.EX-

cept as above described, all kilns are substantially the same as thefirst kiln already described. Indeed, a number of kilns may be usedarranged to connect with a central stack, if desired, each kiln havingone passage communlcating withthe stack and the other passagescommunicating with the adjacent kilns. By the arrangement described eachkiln may be used by itself or in conjunction with the other kilns, asdescribed.

In Figs. 4 and 5 rectangular kilns are These are in their main featuresthe same as have already been described, but I prefer to usebracingbars, such as a, united by rods, such as v.

The operation of the kilns, whether rectangular or circular, ispractically the same; but

of course the passages are differently shaped, as shown inv Fig. 5,being arranged in substantially straight lines instead of in circles.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. The combination of two or more downdraft-kilns, each provided with aseries of openings in its floor, and with a series of fireplaces, ofremovable flues adapted to be inserted in said kilns, and a valvedchannel connecting said flues with the preceding kiln, substantially asdescribed.

2. The combination of a series of kilns, each having a series ofopenings in its floor, a valved channel connecting each of said kilnswith the preceding kiln, a stack, a valved channel connecting each ofsaid kilns with said stack, and a series of removable flues adapted tobe inserted in each of said kilns and to register with some of theopenings in the floor thereof, substantially as described.

3. The combination of a series of downdraft circular or square kilns,each kiln being provided with a series of fireplaces and a series ofopenings through the floor located in concentric circles or straightlines as heretofore described, a valved channel connecting each'of saidkilns with the preceding kiln, a

stack, a valved channel connecting each of said kilns with said stack,the lower part of each of said kilns being provided with a series ofpassages leading into the main passage connecting said kiln t0 thesucceeding kiln, and a series of removable flues adapted to be placed inany or all of said kilns and to register with some of the openings inthe floors thereof, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

JOSEPH T. H. WARWOOD. Witnesses:

R. SnoPoN, GEO. A. SHERMAN.

